Thanks everyone!
When I was switching my colors I forgot some areas. Which led to the higher color count. I'll try to fix it.
I thought Bob Ross pixelled it, hehe.
Great entry. 
Agree with the 4 unecessary colors, but the transp thing is likely a checker bug (this checker doesn't see them; hover over the swatches to see where those 4 colors are used); total is 17. That's room to spare for a few more dark tones to give the landscape more contrast. Lovely piece anyway =)
Man this is awesome!! However you've used like 4 extra unecessary colours which occupy 1-2 pixels! (and you have 22 colours)!
Lawd... I'm just seeing how bad my colors were..
Thank you for the edit!
Last year in June, July and August, I took trips to various canyons and state parks in the southwest US. Those trips were awesome and looking at this reminds me of the good times I had.