Green To Black Gradient

import math

GreenToBlack = ('000000','000A05','00140B','001F10','002E18','00381D','004524','004F29','005E31','006B38','007D41')

def Greentoblack(text):
    leng = len(text)
    output = ''
    if leng < 11:
        for i in range(0, leng):
            output += '<c=#%s>' % GreenToBlack[i]
        for i in range(0, leng):
            output += text[i] + '</c>'
    else:
        output += '<c=#'
        output += '><c=#'.join(GreenToBlack)
        output += '>'
        size = int(math.ceil(leng / 11.0))
        for i in range(1, 12):
            output += text[(i-1)*size:i*size] + '</c>'
    return output
Greentoblack.command="GreenToBlack"