Palette entries should handle unexpected data like floats better

[mixmastamyk]

Traceback (most recent call last):
  File "/home/mgmiller/Desktop/verify_times.py", line 79, in <module>
    delta = fx.bold(1.20)
  File "/media/Data/repos/libs/console/console/core.py", line 481, in __call__
    pos = text.find('\n', 0, MAX_NL_SEARCH)  # if '\n' in text, w/limit
AttributeError: 'float' object has no attribute 'find'