colour me glaze

I've been working on expanding my glaze colour range, by adding commercial stains to my clear gloss glaze.

Red - Walkers FW5827
[l-r: 0.5%, 1%, 4% + 4%]

Orange - Walkers FW5808 
[l-r: 0.5%, 1%, 4% + 4%]

Inspired by Lindsay of Suite One Studio, Green
[l-r: 4% Yellow Walkers FW5400 + 0.5 %, 0.75%, 1%, 1.5%, 1.75%, 2%, 2.5%, 2.75% + 3% Copper Carbonate]

I've found that the red and orange stains have changed the gloss of the clear glaze slightly, so I may have to fire them to a cooler temperature.  The yellow + copper carbonate green keeps it's shine beautifully, but over 2.5% the copper carbonate became inconsistent, however the form and texture of the test tiles (mostly smashed up cracked bisque ware!) may be the cause of this.  Next, trying them on pots!
*EDIT: Silly me, I forgot to say that all of these samples were fired to cone 9 oxidation in an electric kiln!