There is no month in our area when you cannot see any flower at all. Even at the height of the dry season, some perennials still produce some bright colors, even if just a few. The colors now are fading off before the dry season begins, but we still have a lot. I just posted a few here (as it is almost about midnight already, yaaaawn!).
Red Salvia - i just realized that they have eyes, just see them in this photo!
Crinum lily - blooms only during the rainy season
remnants of white Petunia