property ExCursor.AxisTooltipBackColor as Variant
Specifies the visual appearance of the tooltips on the axes

TypeDescription
Variant A string expression that defines the background color of the tooltip that's shown once the crossover cursor hovers the chart. This color property accepts values in various formats: CSS named colors, RGB format (e.g., rgb(red, green, blue)), or hexadecimal format (#RRGGBB). In RGB format, the red, green, and blue values range from 0 to 255, while in hexadecimal format, RR, GG, and BB represent the hexadecimal values of the red, green, and blue channels, respectively.
By default, the AxisTooltipBackColor property is "black". The AxisTooltipBackColor property specifies the visual appearance of the tooltips on the axes. The AxisTooltipForeColor property indicates the foreground color used for displaying tooltips on axes. The SerieTooltipBackColor property specifies the the visual appearance of the tooltips on the series. The SerieTooltipForeColor property indicates the foreground color used for displaying tooltips on series.

For instance: