apache/maven · error · IllegalArgumentException

Invalid color configuration value '${styleColor}'. Supported

Error message

Invalid color configuration value '${styleColor}'. Supported are 'auto', 'always', 'never'.

What it means

Error "Invalid color configuration value '${styleColor}'. Supported are 'auto', 'always', 'never'." thrown in apache/maven.

Source

Thrown at impl/maven-cli/src/main/java/org/apache/maven/cling/invoker/LookupInvoker.java:278

        if (System.getProperty("guice_custom_class_loading", "").isBlank()) {
            System.setProperty("guice_custom_class_loading", "CHILD");
        }
    }

    protected void configureLogging(C context) throws Exception {
        // LOG COLOR
        Map<String, String> effectiveProperties = context.protoSession.getEffectiveProperties();
        String styleColor = context.options()
                .color()
                .orElse(effectiveProperties.getOrDefault(
                        Constants.MAVEN_STYLE_COLOR_PROPERTY, effectiveProperties.getOrDefault("style.color", "auto")))
                .toLowerCase(Locale.ENGLISH);
        if ("always".equals(styleColor) || "yes".equals(styleColor) || "force".equals(styleColor)) {
            context.coloredOutput = true;
        } else if ("never".equals(styleColor) || "no".equals(styleColor) || "none".equals(styleColor)) {
            context.coloredOutput = false;
        } else if (!"auto".equals(styleColor) && !"tty".equals(styleColor) && !"if-tty".equals(styleColor)) {
            throw new IllegalArgumentException(
                    "Invalid color configuration value '" + styleColor + "'. Supported are 'auto', 'always', 'never'.");
        } else {
            boolean isBatchMode = !context.options().forceInteractive().orElse(false)
                    && context.options().nonInteractive().orElse(false);
            if (isBatchMode || context.options().logFile().isPresent()) {
                context.coloredOutput = false;
            }
        }

        context.loggerFactory = LoggerFactory.getILoggerFactory();
        context.slf4jConfiguration = Slf4jConfigurationFactory.getConfiguration(context.loggerFactory);

        if (context.invokerRequest.effectiveVerbose()) {
            context.loggerLevel = Slf4jConfiguration.Level.DEBUG;
            context.slf4jConfiguration.setRootLoggerLevel(context.loggerLevel);
        } else if (context.options().quiet().orElse(false)) {
            context.loggerLevel = Slf4jConfiguration.Level.ERROR;
            context.slf4jConfiguration.setRootLoggerLevel(context.loggerLevel);

View on GitHub (pinned to e4093d4e12)

When it happens

Trigger: Thrown at impl/maven-cli/src/main/java/org/apache/maven/cling/invoker/LookupInvoker.java:278 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/maven@e4093d4e12 (2026-08-21). Data as JSON: /api/errors/d2cfe569d363bf9d. Report an issue: GitHub.