NewTek TriCaster Studio - Manual (Page 52)

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The backgrounds generated can be used behind Overlay pages,
as a background for LiveMatte effects, or for other purposes.
The Color Background tab (Figure 22) has three sections -- the
Background Preview, Mode and Presets panes. (The Horizontal
mode is shown above - two colors are blended from left to right
across the display.)
When you left-click any of the four outer square patches
bounding the Preview pane, the Pick Color window appears.
Using this, you can assign a color to that color patch. You can
do so numerically – or by a direct click in the palette pane of the
Pick Color panel.
Hint: to match a specific color in your imagery, right-click on the square; continue to hold the
button down as you drag to the point you wish to pick the color from. The square updates as you
drag the pointer around the screen, showing the color under the pointer at any moment – release
the button to make your selection.
Figure 21
Figure 22