quick, quick

while i had the paper out from the previous card, i decided to use the second mouse i colored with my pencils - i tried to follow Bob's instructions, he said i should add another color to the mouse and some shadow............i am really bad with the COLORS - i don't know what makes a nice combo, and also which colors to use together.......i am going to GOOGLE it and see if i can find some combo's in normal colors. i want to color a MUSHROOM stamp i got just before X'mas, but suddenly i am not even sure what color a mushroom is..........are they white, grey with a little black? are they brown and black? are Shitaki mushrooms SANDY in color?????? AAAAAAAAAGGGGGGGGGGGHHHHHHHHHHHHH- the mushroom color mystery!! any help will be appreciated!!!