|Here is a test page mixing Opera with Indian yellow and cyan. As seen here, any color can be made very well including an excellent ultramarine blue, and with Thalo green it mixes dark neutral. If it wasn't fugitive it would be perfect, (it's still more permanent than alizarin crimson original).
It mixed a brighter red then Grumbacher red, a brighter orange than cadmium orange.
|This is more color power then I have ever painted with.
I have to test it in the sun for staying power.
The base pigment is PR122 with a little BV10 in it.
So it can't be all bad :)
|It's a powerful color alright. It's value darkened better with PR122 magenta added first, before adding the complement. A minor intermediate step, like adding PR122 to cad red light to make it cad red medium.
I haven't got back my sun test for permanence yet, it's sitting in the windshield of my van.
|This is the 2nd painting with opera color. The reds and oranges are brighter then if I had used cadmium's. Brighter in watercolor anyway, I haven't tested it in oil or acrylic yet. 2011, I tested a oil/water emulsion tubed Opera pigment and it worked fine.
One month later, after setting in the hot Lahaina sun, it lost 10 to 20% of it's color.
The darker PR122 lost no color.
10-7-8 to 6-7-9 The top half was uncovered.
Only the very lightest tints had any color change and that was to a slightly warmer magenta. This is a very usable pigment.
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