$ContextAliases and symbol color

Question

The example below shows that the symbol test`MyFunction is still in blue, which suggests that it is not defined. The color is defined in menu Edit > Preferences> Appearance > SyntaxColoring > Global symbols that have no value assigned.

context`MyFunction[x : _] := x^2
$ContextAliases["test`"] = "context`"
test`MyFunction[5]

How can the front-end be informed about $ContextAliases so that test`MyFunction is black instead of blue?

Note that AppendTo[$ContextPath,"context`"] does not help.

Answer 1

As a trying of possible solutions, there is an ad-hoc method from the definition of DeclareKnownSymbols,

MathLink`CallFrontEnd@FrontEnd`UpdateKernelSymbolContexts[
    "test`",
    {},
    {{"test`",{},{},"MyFunction",{}}},
    Directory[],
    <||>
]

then

To automate the coloring you can further build a function by

1. get all the symbols of context`* by Names["context`*"];
2. color them by UpdateKernelSymbolContexts;
3. dynamically evaluate this function by monitoring Names["context`*"].