is imperative to mix your color down to the bottom of the
bottle since some colors or mediums have a tendency to "separate" themselves
in their bottle. This could lead you to believe that there
is a defect. To name a few: Matt medium, White, Parma, Old
pink, and Sky Blue colors easily split themselves.
best way to mix your color is to use a wood stick (like a coffee
stick) and to make sure to scrape the bottom and center as
you do so.
NOT shake the bottle as this will create a multitude of small
"bubbles" that will not go away easily once painted
on glass. If that ever happens to you, simply let the bottle
hour and then mix it gently with a wood stick.
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