Set params of root rendering

Canvas pixel size:
Gauss plane coordinates amplitude:
Polynom: or x ^ 5 * i / 500 - 200 - 100*i
Zero_threshold: this variable needs to be set properly, so the zero indicative spots should be of appropriate size.
Value mode:
COMPLEX - take whole complex value
REAL - take just real part
IMAGINARY - take just imaginary part
JOINED - add real and imaginary part ignoring i
ABSOLUTE - absolute value
REAL_ABSOLUTE - absolute value of real part
IMAGINARY_ABSOLUTE - absolute value of imaginary part
Scale type:
STANDARD contains 20 std. colors + 6*6*6 RGB mixes
GRAY contains 20 std. colors + 236 shades of gray from WHITE to BLACK
GRAY contains 20 std. colors + 236 shades of gray from BLACK to WHITE
BLUE_RED contains 20 std. colors + 236 two color mixes
GREEN_MAGENTA contains 20 std. colors + 236 two color mixes
COMPLEX contains 20 std. colors + 236 four color (GREEN-RED, BLUE-YELLOW) mixes

Please note: not all combinations of Value mode and Scale type are delightful.