Help with coloring? =(

I love this community, so of course I turn here for assistance <3

I'm trying to make a bright icon with vibrant colors, but I have a problem. I'm working with caps that are dark, but they have really great colors in them - lots of pink and green and yellow. Here are a few exapmples





Duplicating screen layers makes them look so gross, as usually happens, so if anyone has any ideas, I'd love you fuh-evah. Here is a graphic that SOMEONE ELSE made (sorry, I don't know who, I found it on a random Lost site) that uses the same images, but makes them look lovely:



I'm not necessarily looking for that coloring, just something bright and colorful using those images. I know this post is a pain, and I thank anyone who responds to it in advance <3