From
this cap to
Very easy coloring. Probably the simplest you could ever find.
Step One
Take this cap and size it down to 400, the height will automatically populate. Apply an Unsharp Mask (Filter - Sharpen - Unsharp Mask) @ 50.
Step Two
Still in the cap, Fade the Unsharp Mask (Edit - Fade) and set it on screen @ 75%
Step Three
Now make your 100x100 base and drag your cap into it. Size it down and make it fit, if you want.
Step Four
Duplicate your base and set it to screen.
Depending on the cap, you may need to duplicate it several times. That's exactly what I did with this one. I duplicated mine two more times with the last screen layer on 60%.
Step Five
Here come the color fill layers
#02194C on Exclusion
#8FF9F3 on Color Burn
#DAD7D7 on Color Burn
Step Six
Duplicate your base again and drag it to the top. Set it to Soft Light. Add text and effects, if wanted.
Result:
See, simple, right?