How to change the color of your whole picutre in photoshop?

The Match Color command matches colors between multiple images, between multiple layers, or between multiple selections. It also lets you adjust the colors in an image by changing the luminance, changing the color range, and neutralizing a color cast. The Match Color command works only in RGB mode.

Note:

When you use the Match Color command, the pointer becomes the Eyedropper tool. Use the Eyedropper tool while adjusting the image to view the color pixel values in the Info panel. This panel gives you feedback about changes in color values as you use the Match Color command. See View color values in an image.

The Match Color command matches the colors in one image (the source image) with colors in another image (the target image). Match Color is useful when you’re trying to make the colors in different photos consistent, or when certain colors (such as skin tones) in one image must match the colors in another image.

In addition to matching the color between two images, the Match Color command can match the color between different layers in the same image.Match the color between two images(Optional) Make a selection in the source and target images.

If you don’t make a selection, then the Match Color command matches the overall image statistics between images.

Make the image that you want to change active, and then choose Image > Adjustments > Match Color.

If you’re applying the Match Color command to a specific layer in the target image, make sure that layer is active when you choose the Match Color command.

From the Source menu in the Image Statistics area of the Match Color dialog box, choose the source image whose colors you’ll be matching in the target image. Choose None when you don’t want to reference a different image to calculate the color adjustment. With None chosen, the target image and the source image are the same.

If necessary, use the Layer menu to choose the layer from the source image whose colors you want to match. You can also choose Merged from the Layer menu to match the colors from all the layers in the source image.

If you made a selection in the image, do one or more of the following:In the Destination Image area, select Ignore Selection When Applying Adjustment if you’re applying the adjustment to the entire target image. This option ignores the selection in the target image and applies the adjustment to the entire target image.In the Image Statistics area, select Use Selection In Source To Calculate Colors if you made a selection in the source image and want to use the colors in the selection to compute the adjustment. Deselect this option to ignore the selection in the source image, and use the colors from the entire source image to compute the adjustment.In the Image Statistics area, select Use Selection In Target To Calculate Adjustment if you made a selection in the target image and want to use the colors in the selection to calculate the adjustment. Deselect this option to ignore the selection in the target image and compute the adjustment by using the colors of the entire target image.To automatically remove a color cast in the target image, select the Neutralize option. Make sure that the Preview option is selected so that your image is updated as you make adjustments.To increase or decrease the brightness in the target image, move the Luminance slider. Alternatively, enter a value in the Luminance box. The maximum value is 200, the minimum is 1, and the default is 100.To adjust the color saturation in the target image, adjust the Color Intensity slider. Alternatively, enter a value in the Color Intensity box. The maximum value is 200, the minimum is 1 (which produces a grayscale image), and the default is 100.To control the amount of adjustment applied to the image, move the Fade slider. Moving the slider to the right reduces the adjustment.Click OK.Match the color of two layers in the same image(Optional) Make a selection in the layer you want to match. Use this method when matching a color region (for example, facial skin tones) in one layer with a region in another.

If you don’t make a selection, then the Match Color matches the colors of the entire source layer.

Make sure that the layer you want to target (apply the color adjustment to) is active, and then choose Image > Adjustments > Match Color.From the Source menu in the Image Statistics area of the Match Color dialog box, make sure that the image in the Source menu is the same as the target image. I hope this helps. :)

Work with a monitor that’s calibrated and profiled. for critical image editing, calibration and profiling are essential. otherwise, the image you see on your monitor looks different on other monitors or when printed.plan to use adjustment layers to adjust the tonal range and color balance of your image. adjustment layers let you go back and make successive tonal adjustments without discarding or permanently modifying data from the image layer. keep in mind that using adjustment layers adds to the file size of the image and demands more ram from your computer. accessing the color and tonal commands in the adjustments panel automatically creates adjustment layers.if you don’t want to use adjustment layers, you can apply adjustments directly to an image layer. remember that some image information is discarded, when making a color or tonal adjustment directly to an image layer.for critical work and maximum preservation of image data, it’s best if the image you work with is 16 bits per channel (16‑bit image) rather than 8 bits per channel (8‑bit image). data is discarded when you make tonal and color adjustments. the loss of image information is more critical in an 8‑bit image than a 16‑bit image. generally, 16‑bit images have a larger file size than 8‑bit images.duplicate or make a copy of the image file. working on a copy of your image preserves the original in the event you want to use the image in its original state.remove any flaws such as dust spots, blemishes, and scratches from the image before making color and tonal adjustments.open the info or histogram panel in expanded view. as you evaluate and correct the image, both panels display invaluable feedback on your adjustments.you can make a selection or use a mask to confine your color and tonal adjustments to part of an image. another way to apply color and tonal adjustments selectively is to set up your document with image components on different layers. color and tonal adjustments are applied to only one layer at a time. only the image components on the targeted layer are affected.

You should see a little paperclip on the bottom left corner you click on it and it gives you two options (camera and gallery)