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The neon bulbs are to limit the flyback pulse amplitude that drives the color, blanking and agc circuits. The pulse will not normally be enough to light the bulbs. It must be there or you would see other problems.
Make sure the hue control is good. Clean it out and look for change. The burst phase transformer will act like a hue control when the color circuit is working.
Grounding the color test point should cause floating color lines across the picture during a color broadcast. If it does, then adjust the color oscillator coil for the colors to barely float by. Remove the ground and adjust the burst phase transformer for proper color with the hue control in the center of range.
Whatever fails during the procedure will point to the trouble area.
Don
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