I have the same issue differentiating the trend lines when viewing the
line graphs with regard to cash flow. The colors are just too similar
for someone with my form of colorblindness to tell apart. I think the
solution is to use primary colors or circles, squares and triangles to
identify each line.
Can you include an arrow next to the current price, either up or down,
depending on the circumstances. It would be a neat addition and also
help colorblind (and non-colorblind) individuals more easily recognize
whether the stock is up or down. Red and green, although conventional,
are very difficult for some people, like me, to tell apart.
Thanks!