How to change color for brush strokes in Photoshop, very specifically even if some have transparency

[r_tist]

Hi,

I created an illustration using watercolor brushes so they have many gaps in the strokes to simulate real watercolor. In addition, some of the layers utilizing this effect have the opacity turned down for a transparent effect for blending effect.

I need to convert the same 3 colors I utilized for each brush stroke to different colors. (specific colors)

How can I achieve this considering the delicate nature of each watercolor brush stroke and varying opacity %s factored in?

I need a bullet-proof technique.

Thank you.

[melissapiccone]

You have brush stokes and want to change the colors - a screenshot would help, include your layers panel. Are the brush strokes in their own layers? I would use a clipping mask above the layer set to color with a solid color in it... Create a colid color layer, set blend mode to color and clip to the layer to recolor. 

[c.pfaffenbichler]

The layered image or at least a part of it might also be useful to assess what the actual situation is. 

Are there significant areas where the three current colors overlap/mix? 

What are the intended replacement colors? 

[r_tist]

background color layer, midtone color layer, layer with shadow color - analogous color scheme in purple and violet.

Now, need to convert colors to their equivalents in orange and red.

[c.pfaffenbichler]

Please provide the layered image (or at least a cropped part of it). 

@melissapiccone already mentioned Clipping Masking Solid Color Layers to the the brushstroke-Layers, another option might be using the Layer Style »Color Overlay«. 

[c.pfaffenbichler]

Could you please post screenshots with the pertinent Panels (Toolbar, Layers, Options Bar, …) visible? 

[r_tist]

Tried a quick test using color overlay. It seems to work just fine! But, for printing (CMYK) does this pose any challenges or is it viable for the final file?

[c.pfaffenbichler]

Tried a quick test using color overlay. It seems to work just fine! But, for printing (CMYK) does this pose any challenges or is it viable for the final file?

By @r_tist

First off: Please post the requested screenshots. 

Secondly: What do you mean? Are you working in RGB or CMYK? 

[r_tist]

Correct. Each color with its associated brush strokes are on their own layer (a single color is applied to each layer - no mixing different colors within the same layer, or that would, otherwise, spell havoc for what I am trying to do here. So the 'look' achieved per layer as a "whole" needs to be converted to a different color.

[Nancy OShea]

Changing Blend Modes might accomplish what you want.

https://helpx.adobe.com/photoshop/using/blending-modes.html