At the rate we get public transit projects built here, not just discussed and batted around politically, and of this scale to boot - I will take a pink dildo looking paint scheme , if it works and helps get us more transit lines.
To this point, I don't believe we should be spending loads of money on beautifying stations - make them accessible to all, concrete and well-enough designed that they function and can be expanded or easily retrofit in the future. We should keep doing this until we have a dozen or so actual underground lines, that criss-cross the city. Until then, let's refrain from building palace-like stations, a la the Spadina Extension to Vaughan. Furthermore, station integration within buildings is another absolute must - we cannot waste development opportunities and continue to build stand-alone station entrances - unless absolutely necessary.