I have always loved those Butter and Eggs wildflowers, also known as Toadflax, in Estes Park! You can see them everywhere and they are so colorful. They have the same colors as butter and eggs, thus they got their name.
Only to find out a few years later that they are an invasive plant from Europe that blooms from June through September on rangelands and roadsides. I photographed this one down by Lake Estes.
I still think they are a very pretty “invasive” wildflower. What do you think?