Tree looks really nice, Judy! Regarding getting the colors of the flowers to show...are you using an auto white balance or setting the camera to one of its predefined lighting options? If so, you might want to try using the white balance option if your camera has it (basically you put a pure white object in the spot where the tree will be, and set the white balance off that). Not every camera has that option. Other possibilities - most cameras have options to adjust the sensitivity to various colors, so you could set it to be more sensitive to red if the flowers have a reddish or pinkish tint. The last option, which I sometimes have to use even after doing the above, is simply adjust the color of the flowers in a photo editing program after the fact.
Maybe your cell phone camera has more features? I have a Canon powershot SX530HS which isn't all that expensive (less than $300) and has all the manual settings and white balance options (more than I'll ever use). It takes decent pics for the price but even after all the adjustments to the camera, I still often have to adjust the photos after. And it is still tough at times to get everything looking good as I don't have a good light setup, often the canopy is well lit but the trunk is too dark (or vice versa).
