I've tried several times to make a unfading salmon-orange Mini-Sinn. that also features large and fully open bloom, but no success before. (many so-called salmon-orange Mini-Sinningias turn to pale or nearly white when the temperature gets hotter)
The concern is to combine both shape and color, beside these, I also prefer it to be with better growth and blooming characters. It's not easy to have all features happened in a cross, so I made several "bridge" crosses over years and firstly let salmon-orange color accumulate through these crosses and enhance the transformation of the flower shape. Because in my experience, the direct offsprings from current named parentage don't properly fit all features that I'm looking for.
some "bridges" to the salmon-orange Mini-Sinn. that I've made
About 2 years ago, I picked out the offsprings which are qualified with their "bridge" mission (I supposed) and made a cross with hope. The result was positive although there were still many pink items but few with salmon-orange color. As far as I can see the background genes of these Mini-Sinn. were already varied through the process of the "bridge" hybirdization, it's hard to predict how the genes will be re-combined.
I keep those salmon-orange items under estimation until now. It seems the salmon-color doesn't turn to pale when my growing area is 40 degrees C in average in summer. The strategy of color accumulation seems to work fine at this stage. This is important because if it doesn't fade during hot weather, the salmon-orange will be even vivid when the temperature drops down. And the shape is fully open, size is 2.5 to 3cm showing in different seasons. The growth and blooming characters are ok so far.
The kept salmon-orange Mini-Sinn. seedling. The flower on the left is a dropped flower but fresh, can see the color doesn't change until end of life. Photo was taken in 28th July, 2012
The flower on the right is another seedling from the same cross but shows pinkish-orange form. Photo was taken in 5th August, 2012