hal_gremlin emits a GStat message when a line is clicked. It returns the line number.
If you connected to this message then you could possibly do what you wish.
Code:
colors = {
'traverse': (0.30, 0.50, 0.50),
'traverse_alpha': 1/3.,
'traverse_xy': (0.30, 0.50, 0.50),
'traverse_alpha_xy': 1/3.,
'traverse_uv': (0.30, 0.50, 0.50),
'traverse_alpha_uv': 1/3.,
'backplotprobing_alpha': 0.75,
'backplotprobing': (0.63, 0.13, 0.94),
'backplottraverse': (0.30, 0.50, 0.50),
'label_ok': (1.00, 0.51, 0.53),
'backplotjog_alpha': 0.75,
'tool_diffuse': (0.60, 0.60, 0.60),
'backplotfeed': (0.75, 0.25, 0.25),
'back': (0.00, 0.00, 0.00),
'lathetool_alpha': 0.10,
'axis_x': (0.20, 1.00, 0.20),
'cone': (1.00, 1.00, 1.00),
'cone_xy': (0.00, 1.00, 0.00),
'cone_uv': (0.00, 0.00, 1.00),
'axis_z': (0.20, 0.20, 1.00),
'label_limit': (1.00, 0.21, 0.23),
'backplotjog': (1.00, 1.00, 0.00),
'selected': (0.00, 1.00, 1.00),
'lathetool': (0.80, 0.80, 0.80),
'dwell': (1.00, 0.50, 0.50),
'overlay_foreground': (1.00, 1.00, 1.00),
'overlay_background': (0.00, 0.00, 0.00),
'straight_feed': (1.00, 1.00, 1.00),
'straight_feed_alpha': 1/3.,
'straight_feed_xy': (0.20, 1.00, 0.20),
'straight_feed_alpha_xy': 1/3.,
'straight_feed_uv': (0.20, 0.20, 1.00),
'straight_feed_alpha_uv': 1/3.,
'small_origin': (0.00, 1.00, 1.00),
'backplottoolchange_alpha': 0.25,
'backplottraverse_alpha': 0.25,
'overlay_alpha': 0.75,
'tool_ambient': (0.40, 0.40, 0.40),
'tool_alpha': 0.20,
'backplottoolchange': (1.00, 0.65, 0.00),
'backplotarc': (0.75, 0.25, 0.50),
'm1xx': (0.50, 0.50, 1.00),
'backplotfeed_alpha': 0.75,
'backplotarc_alpha': 0.75,
'arc_feed': (1.00, 1.00, 1.00),
'arc_feed_alpha': .5,
'arc_feed_xy': (0.20, 1.00, 0.20),
'arc_feed_alpha_xy': 1/3.,
'arc_feed_uv': (0.20, 0.20, 1.00),
'arc_feed_alpha_uv': 1/3.,
'axis_y': (1.00, 0.20, 0.20),
'grid': (0.15, 0.15, 0.15),
}
