Do you ever have the color of flowers that you need? Me either. As an economical measure, I have solved my problem by buying only white flowers and adding color. Usually, patterned paper is realitively inexpensive, but you can run up a bill quickly buying accessories so I make most of my own.
For flowers, I use anything that will stain the colors I need. Mulberry flowers like Vicky used on her IFS post last Thursday take coloring the best. http://ideasforscrapbookers.blogspot.com/2012/02/soft-petal-flowers.html In the example included here, I had a few sheets of a couple different paper collections from My Mind's Eye and no matching embellishments. One flower was painted, using different shades of acrylic pink paint. Acrylic paints are inexpensive and a few bottles of basic colors allow you to blend whatever color you need. For the top coat I used a dry mustache brush (no idea where I got it) to strafe the lighter color on top of the dark color. Made a mistake? No big deal, just re-paint it!
The teal flowers were colored using alcohol ink. I applied the ink to a dabber, then added some alcohol with a medicine dropper to lighten up the color. You can buy alcohol ink medium where ever the inks are sold, but it is ordinary rubbing alcohol and costs a lot more than the quart bottle of alcohol at your local discount store. I like to streak the colors for depth but an even color is also easily accomplished. For the following layout the flowers were looking a little drab so I finished them off with glossy Modge Podge.
I used Pam Callaghan (IFS)'s Big Heart Template. I loved her page and had to use the sketch . http://ideasforscrapbookers.blogspot.com/2011/11/new-big-heart-sketch.html.
I have also used a direct ink pad to flower method as well as the new distress ink pads. Another favorite technique is to stamp a design which adds interest and color. Since I live five hours from a scrapbook store, improvise is my middle name. There is not much you can do to color a flower than can't be undone or re-done so don't be afraid to try what you have on hand.