The 5-7-5 meter is kept and you have the intimation of a second layer of meaning in the second line, so this is a good haiku. The secondary idea is supposed to be veiled. I wouldn't change this or try to explain it.
For some reason my mind wanted to reply to "open your pallete" with "shut your pie hole"
I agree with the comments previous, a very inspirational write in such a short write, and that is tough to accomplish, but you did it. I really enjoyed the point behind this poem, and how you articulated it throught this piece. Wow, great write, and I really look foward to reading more of your work soon!, anyways, take care, and keep writing!
You've painted a spectrum of opportunity in three short lines! Inspiration can be found anywhere from the forest to the sea; and can be blended into any hue, if we only open ourselves to it. Im honored to know I may have encouraged you to write such a lovely piece. You must take full credit for the creation, though-your heart and mind seem to imprint each word. Excellent work! A favorite for certain. :D
I wonder if you are an artist...well of course you are in writing but I mean are you a painter? I liked this peice because its quick, not like a swift striking blade but rather a flower petal falling, gently but swiftly.(woa, where'd that come from?) Anyways, it seems that you are telling people to see the world for what it is, an array of colors, all to be seen as beautiful.
I like the subject, and think that the title fits well, but as for an unbiased review, I'd have to say that it seemed to end too suddenly: "Open your palette." Open it to do what, you already have all these colours around, unless you want to paint the world as you see it, rather than create it with paint, like the title somewhat suggests. Maybe this was more along the lines I was thinking of:
The colour around Doesn't tell the whole story Open your palette.
Meh, just a quicky, and anyone could do better but that pretty much sums up what I thought this haiku was about.